Google colab 跑通 faster-rcnn-有解無憂

說在前面的話

本文大部分借鑒參考文章（文末已給出參考鏈接），僅作為學習筆記

首先提示 Google colab 使用 GPU 有時間限制，盡量不需要使用時就不要選擇使用

步驟1-6只需 CPU 即可完成，步驟7-9才需要使用 GPU

1 連接云盤，指定路徑，只使用CPU

cd + 路徑 的命令時靈時不靈，下次還是使用 os.chdir 命令執行

import os
os.chdir("/content/drive/My Drive")
!ls

2 下載 faster-rcnn 專案檔案

!git clone -b pytorch-1.0 https://github.com/jwyang/faster-rcnn.pytorch.git

運行結果

Cloning into 'faster-rcnn.pytorch'...
remote: Enumerating objects: 3858, done.
remote: Total 3858 (delta 0), reused 0 (delta 0), pack-reused 3858
Receiving objects: 100% (3858/3858), 6.22 MiB | 8.10 MiB/s, done.
Resolving deltas: 100% (2615/2615), done.

3 指定到專案路徑下

!cd faster-rcnn.pytorch/ 
!ls

4 創建新檔案夾data并下載預訓練模型

此時的路徑應該是在 faster-rcnn.pytorch 目錄下

!mkdir data
os.chdir('data')
!mkdir pretrained_model
os.chdir('pretrained_model')
# 下載預訓練模型res101
!wget https://filebox.ece.vt.edu/~jw2yang/faster-rcnn/pretrained-base-models/resnet101_caffe.pth
# 下載預訓練模型vgg16
!wget https://filebox.ece.vt.edu/~jw2yang/faster-rcnn/pretrained-base-models/vgg16_caffe.pth

運行結果

--2020-11-02 16:47:59--  https://filebox.ece.vt.edu/~jw2yang/faster-rcnn/pretrained-base-models/resnet101_caffe.pth
Resolving filebox.ece.vt.edu (filebox.ece.vt.edu)... 128.173.88.43
Connecting to filebox.ece.vt.edu (filebox.ece.vt.edu)|128.173.88.43|:443... connected.
HTTP request sent, awaiting response... 200 OK
Length: 178678116 (170M)
Saving to: ‘resnet101_caffe.pth’

resnet101_caffe.pth 100%[===================>] 170.40M  41.1MB/s    in 8.2s    

2020-11-02 16:48:07 (20.8 MB/s) - ‘resnet101_caffe.pth’ saved [178678116/178678116]

--2020-11-02 16:48:08--  https://filebox.ece.vt.edu/~jw2yang/faster-rcnn/pretrained-base-models/vgg16_caffe.pth
Resolving filebox.ece.vt.edu (filebox.ece.vt.edu)... 128.173.88.43
Connecting to filebox.ece.vt.edu (filebox.ece.vt.edu)|128.173.88.43|:443... connected.
HTTP request sent, awaiting response... 200 OK
Length: 553433685 (528M)
Saving to: ‘vgg16_caffe.pth’

vgg16_caffe.pth     100%[===================>] 527.79M  32.3MB/s    in 27s     

2020-11-02 16:48:35 (19.3 MB/s) - ‘vgg16_caffe.pth’ saved [553433685/553433685]

5 下載訓練集voc2007到data檔案下

此時的路徑應該是在 faster-rcnn.pytorch/data 目錄下

os.chdir('../') #回傳上一級目錄即data/下
# 下載資料集
!wget http://host.robots.ox.ac.uk/pascal/VOC/voc2007/VOCtrainval_06-Nov-2007.tar
!wget http://host.robots.ox.ac.uk/pascal/VOC/voc2007/VOCtest_06-Nov-2007.tar
!wget http://host.robots.ox.ac.uk/pascal/VOC/voc2007/VOCdevkit_08-Jun-2007.tar
# 解壓縮
!tar xvf VOCtrainval_06-Nov-2007.tar
!tar xvf VOCtest_06-Nov-2007.tar
!tar xvf VOCdevkit_08-Jun-2007.tar
# 建立軟連接
!ln -s $VOCdevkit VOCdevkit2007 #注意！如果上面解壓縮得到的檔案夾名字為"VOCdevdit"，要將其改為“VOCdevdit2007"，否則后面會報錯，

報錯：ln: failed to create symbolic link ‘./VOCdevkit2007’: Operation not supported
分析：路徑原因，進入到 data 目錄下，再次建立軟連接

!ls
# 建立軟連接
!ln -s $VOCdevkit VOCdevkit2007 #再來一次

如果顯示 File exists ，說明已經軟連接已經創建成功

pretrained_model	   VOCdevkit2007	    VOCtrainval_06-Nov-2007.tar
VOCdevkit_08-Jun-2007.tar  VOCtest_06-Nov-2007.tar
ln: failed to create symbolic link './VOCdevkit2007': File exists

6 回到data路徑，然后進入lib中進行編譯

os.chdir('../lib')
!python setup.py build develop

#編譯成功的顯示
x86_64-linux-gnu-g++ -pthread -shared -Wl,-O1 -Wl,-Bsymbolic-functions -Wl,-Bsymbolic-functions -Wl,-z,relro -Wl,-Bsymbolic-functions -Wl,-z,relro -g -fstack-protector-strong -Wformat -Werror=format-security -Wdate-time -D_FORTIFY_SOURCE=2 build/temp.linux-x86_64-3.6/content/drive/My Drive/faster-rcnn.pytorch/lib/model/csrc/vision.o build/temp.linux-x86_64-3.6/content/drive/My Drive/faster-rcnn.pytorch/lib/model/csrc/cpu/ROIAlign_cpu.o build/temp.linux-x86_64-3.6/content/drive/My Drive/faster-rcnn.pytorch/lib/model/csrc/cpu/nms_cpu.o -L/usr/local/lib/python3.6/dist-packages/torch/lib -lc10 -ltorch -ltorch_cpu -ltorch_python -o build/lib.linux-x86_64-3.6/model/_C.cpython-36m-x86_64-linux-gnu.so
running develop
running egg_info
creating faster_rcnn.egg-info
writing faster_rcnn.egg-info/PKG-INFO
writing dependency_links to faster_rcnn.egg-info/dependency_links.txt
writing top-level names to faster_rcnn.egg-info/top_level.txt
writing manifest file 'faster_rcnn.egg-info/SOURCES.txt'
writing manifest file 'faster_rcnn.egg-info/SOURCES.txt'
running build_ext
copying build/lib.linux-x86_64-3.6/model/_C.cpython-36m-x86_64-linux-gnu.so -> model
Creating /usr/local/lib/python3.6/dist-packages/faster-rcnn.egg-link (link to .)
Adding faster-rcnn 0.1 to easy-install.pth file

Installed /content/drive/My Drive/faster-rcnn.pytorch/lib
Processing dependencies for faster-rcnn==0.1
Finished processing dependencies for faster-rcnn==0.1

7 開始使用GPU，重新指定路徑

import os
os.chdir("/content/drive/My Drive/faster-rcnn.pytorch/")
!ls

8 再次編譯setup.py檔案

os.chdir('lib/')
!python setup.py build develop
os.chdir('../')

9 更改 trainval_net.py 檔案

195行：cfg.TRAIN.USE_FLIPPED = False #把True 改成 False

目的：不對圖片進行翻折，節省資料加載的時間

在這里插入圖片描述

9 開始訓練（加載資料集大概花費10-20分鐘）

#切換GPU運行
!CUDA_VISIBLE_DEVICES=0 python3 trainval_net.py \
                    --dataset pascal_voc \
                    --net res101 \
                    --bs 4 \
                    --nw 0 \
                    --lr 0.004 \
                    --lr_decay_step 8 \
                    --epochs 10 \
                    --cuda \

Called with args:
Namespace(batch_size=4, checkepoch=1, checkpoint=0, checkpoint_interval=10000, checksession=1, class_agnostic=False, cuda=True, dataset='pascal_voc', disp_interval=100, large_scale=False, lr=0.004, lr_decay_gamma=0.1, lr_decay_step=8, mGPUs=False, max_epochs=10, net='res101', num_workers=0, optimizer='sgd', resume=False, save_dir='models', session=1, start_epoch=1, use_tfboard=False)
Using config:
{'ANCHOR_RATIOS': [0.5, 1, 2],
 'ANCHOR_SCALES': [8, 16, 32],
 'CROP_RESIZE_WITH_MAX_POOL': False,
 'CUDA': False,
 'DATA_DIR': '/content/drive/My Drive/faster-rcnn.pytorch/data',
 'DEDUP_BOXES': 0.0625,
 'EPS': 1e-14,
 'EXP_DIR': 'res101',
 'FEAT_STRIDE': [16],
 'GPU_ID': 0,
 'MATLAB': 'matlab',
 'MAX_NUM_GT_BOXES': 20,
 'MOBILENET': {'DEPTH_MULTIPLIER': 1.0,
               'FIXED_LAYERS': 5,
               'REGU_DEPTH': False,
               'WEIGHT_DECAY': 4e-05},
 'PIXEL_MEANS': array([[[102.9801, 115.9465, 122.7717]]]),
 'POOLING_MODE': 'align',
 'POOLING_SIZE': 7,
 'RESNET': {'FIXED_BLOCKS': 1, 'MAX_POOL': False},
 'RNG_SEED': 3,
 'ROOT_DIR': '/content/drive/My Drive/faster-rcnn.pytorch',
 'TEST': {'BBOX_REG': True,
          'HAS_RPN': True,
          'MAX_SIZE': 1000,
          'MODE': 'nms',
          'NMS': 0.3,
          'PROPOSAL_METHOD': 'gt',
          'RPN_MIN_SIZE': 16,
          'RPN_NMS_THRESH': 0.7,
          'RPN_POST_NMS_TOP_N': 300,
          'RPN_PRE_NMS_TOP_N': 6000,
          'RPN_TOP_N': 5000,
          'SCALES': [600],
          'SVM': False},
 'TRAIN': {'ASPECT_GROUPING': False,
           'BATCH_SIZE': 128,
           'BBOX_INSIDE_WEIGHTS': [1.0, 1.0, 1.0, 1.0],
           'BBOX_NORMALIZE_MEANS': [0.0, 0.0, 0.0, 0.0],
           'BBOX_NORMALIZE_STDS': [0.1, 0.1, 0.2, 0.2],
           'BBOX_NORMALIZE_TARGETS': True,
           'BBOX_NORMALIZE_TARGETS_PRECOMPUTED': True,
           'BBOX_REG': True,
           'BBOX_THRESH': 0.5,
           'BG_THRESH_HI': 0.5,
           'BG_THRESH_LO': 0.0,
           'BIAS_DECAY': False,
           'BN_TRAIN': False,
           'DISPLAY': 20,
           'DOUBLE_BIAS': False,
           'FG_FRACTION': 0.25,
           'FG_THRESH': 0.5,
           'GAMMA': 0.1,
           'HAS_RPN': True,
           'IMS_PER_BATCH': 1,
           'LEARNING_RATE': 0.001,
           'MAX_SIZE': 1000,
           'MOMENTUM': 0.9,
           'PROPOSAL_METHOD': 'gt',
           'RPN_BATCHSIZE': 256,
           'RPN_BBOX_INSIDE_WEIGHTS': [1.0, 1.0, 1.0, 1.0],
           'RPN_CLOBBER_POSITIVES': False,
           'RPN_FG_FRACTION': 0.5,
           'RPN_MIN_SIZE': 8,
           'RPN_NEGATIVE_OVERLAP': 0.3,
           'RPN_NMS_THRESH': 0.7,
           'RPN_POSITIVE_OVERLAP': 0.7,
           'RPN_POSITIVE_WEIGHT': -1.0,
           'RPN_POST_NMS_TOP_N': 2000,
           'RPN_PRE_NMS_TOP_N': 12000,
           'SCALES': [600],
           'SNAPSHOT_ITERS': 5000,
           'SNAPSHOT_KEPT': 3,
           'SNAPSHOT_PREFIX': 'res101_faster_rcnn',
           'STEPSIZE': [30000],
           'SUMMARY_INTERVAL': 180,
           'TRIM_HEIGHT': 600,
           'TRIM_WIDTH': 600,
           'TRUNCATED': False,
           'USE_ALL_GT': True,
           'USE_FLIPPED': True,
           'USE_GT': False,
           'WEIGHT_DECAY': 0.0001},
 'USE_GPU_NMS': True}
Loaded dataset `voc_2007_trainval` for training
Set proposal method: gt
Preparing training data...
voc_2007_trainval gt roidb loaded from /content/drive/My Drive/faster-rcnn.pytorch/data/cache/voc_2007_trainval_gt_roidb.pkl
done
before filtering, there are 5011 images...
after filtering, there are 5011 images...
5011 roidb entries
Loading pretrained weights from data/pretrained_model/resnet101_caffe.pth
/content/drive/My Drive/faster-rcnn.pytorch/lib/roi_data_layer/roibatchLoader.py:191: UserWarning: This overload of nonzero is deprecated:
	nonzero(Tensor input, *, Tensor out)
Consider using one of the following signatures instead:
	nonzero(Tensor input, *, bool as_tuple) (Triggered internally at  /pytorch/torch/csrc/utils/python_arg_parser.cpp:766.)
  keep = torch.nonzero(not_keep == 0).view(-1)
[session 1][epoch  1][iter    0/1252] loss: 5.0488, lr: 4.00e-03
			fg/bg=(91/421), time cost: 0.546721
			rpn_cls: 0.7514, rpn_box: 0.4337, rcnn_cls: 3.4795, rcnn_box 0.3841
[session 1][epoch  1][iter  100/1252] loss: 1.6237, lr: 4.00e-03
			fg/bg=(100/412), time cost: 78.455308
			rpn_cls: 0.0927, rpn_box: 0.0339, rcnn_cls: 0.5683, rcnn_box 0.4468
[session 1][epoch  1][iter  200/1252] loss: 1.2805, lr: 4.00e-03
			fg/bg=(105/407), time cost: 80.196287
			rpn_cls: 0.1298, rpn_box: 0.0758, rcnn_cls: 0.5040, rcnn_box 0.4562
[session 1][epoch  1][iter  300/1252] loss: 1.1924, lr: 4.00e-03
			fg/bg=(128/384), time cost: 80.389846
			rpn_cls: 0.2270, rpn_box: 0.0917, rcnn_cls: 0.5527, rcnn_box 0.5752
[session 1][epoch  1][iter  400/1252] loss: 1.1088, lr: 4.00e-03
			fg/bg=(82/430), time cost: 80.646110
			rpn_cls: 0.0800, rpn_box: 0.0659, rcnn_cls: 0.3532, rcnn_box 0.3635

參考文章
LCCFlccf 2019-04-14 21:50:57 使用colab訓練faster-rcnn

轉載請註明出處，本文鏈接：https://www.uj5u.com/qianduan/202601.html

標籤：其他

上一篇：《零基礎看得懂的C語言入門教程》——（十二）原來結構體是這么回事

下一篇：這份PDF究竟有什么樣的魔力！竟讓大專生的我成功拿下了阿里、騰訊、美團等offer（大資料崗）